Publications

Martin Hecht. Simulation of Peloids. 2007. [PUMA: Aluminiumoxide; Cluster; Clusterbildung; Computersimulation; DLVO-Theorie; Geologie; Kolloid; Molekulardynamik; Oberfl{\"a}chenladung; Scherung; Scherverd{\"u}nnung; Stabilit{\"a}t; Stabilit{\"a}tsdiagramm; Zeta-Potential; cell; charge diagram; dynamics; mechanics model; regulation rotation shear soil stability stochastic] URL

A. Pustogow, T. Peterseim, S. Kolatschek, L. Engel, and M. Dressel. Electronic correlations versus lattice interactions: Interplay of charge and anion orders in (TMTTF)2X. Phys. Rev. B, (94)19:195125, American Physical Society, November 2016. [PUMA: (TMTTF)2X anion charge orders] URL

M. Pinterić, M. Čulo, O. Milat, M. Basletić, B. Korin-Hamzić, E. Tafra, A. Hamzić, T. Ivek, T. Peterseim, K. Miyagawa, K. Kanoda, J.A. Schlueter, M. Dressel, and S. Tomić. Anisotropic Charge Dynamics in the Spin-Liquid Candidate κ-(BEDT-TTF)2Cu2(CN)3. Phys. Rev. B, (90)19:195139, November 2014. [PUMA: charge dynamics]

M. Dressel, M. Dumm, T. Knoblauch, B. Koehler, B. Salameh, and S. Yasin. Charge Order Breaks Magnetic Symmetry in Molecular Quantum Spin Chains. Advances in Condensed Matter Physics, (2012):398721, 2012. [PUMA: chains charge order spin] URL

Rebecca Beyer, Neven Barisic, and Martin Dressel. Charge-density fluctuations probed by vibronic modes of K0.3MoO3. Physica B: Condensed Matter, (407)11:1823-1826, Elsevier BV, June 2012. [PUMA: charge density fluctuations] URL

S. Kaiser, M. Dressel, Y. Sun, A. Greco, J. A. Schlueter, G. L. Gard, and N. Drichko. Bandwidth Tuning Triggers Interplay of Charge Order and Superconductivity in Two-Dimensional Organic Materials. Phys. Rev. Lett., (105)20:206402, American Physical Society, November 2010. [PUMA: charge order superconductivity] URL

Natalia Drichko, Stefan Kaiser, Yaxiu Sun, Conrad Clauss, Martin Dressel, Hatsumi Mori, John Schlueter, Elena I. Zhyliaeva, Svetlana A. Torunova, and Rimma N. Lyubovskaya. Evidence for charge order in organic superconductors obtained by vibrational spectroscopy. Physica B: Condensed Matter, (404)3-4:490-493, Elsevier BV, March 2009. [PUMA: charge order superconductors] URL

T. Ivek, T. Vuletić, B. Korin-Hamzić, O. Milat, S. Tomić, B. Gorshunov, M. Dressel, J. Akimitsu, Y. Sugiyama, C. Hess, and B. Büchner. Crossover in charge transport from one-dimensional copper-oxygen chains to two-dimensional ladders in (La,Y)y(Sr,Ca)14-yCu24O41. Phys. Rev. B, (78)20:205105, American Physical Society, November 2008. [PUMA: chains charge copper-oxygen ladders transport] URL

M. Dumm, D. Faltermeier, B. Salameh, N. Drichko, and M. Dressel. Charge dynamics of κ-(BEDT-TTF)2CuN(CN)2Br0.4Cl0.6. Physica C: Superconductivity and its Applications, (460-462):645-646, Elsevier BV, September 2007. [PUMA: BEDT-TTF charge dynamics] URL

A. Pashkin, M. Dressel, and C. A. Kuntscher. Pressure-induced deconfinement of the charge transport in the quasi-one-dimensional Mott insulator (TMTTF)2AsF6. Phys. Rev. B, (74)16:165118, American Physical Society, October 2006. [PUMA: Mott TMTTF charge insulator transport] URL

M. Dumm, B. Salameh, M. Abaker, L.K. Montgomery, and M. Dressel. Magnetic and optical studies of spin and charge ordering in (TMTTF) 2AsF 6. J. Phys. IV France 114: 57, (114):57-60, 2004. [PUMA: TMTTF charge ordering spin]

M. Sing, U. Schwingenschlögl, R. Claessen, M. Dressel, and C. S. Jacobsen. Surface characterization and surface electronic structure of organic quasi-one-dimensional charge transfer salts. Phys. Rev. B, (67)12:125402, American Physical Society, March 2003. [PUMA: charge salts transfer] URL

B. Gorshunov, S. Haffner, M. Dressel, B. Lommel, F. Ritter, and W. Assmus. Optical response of the sliding charge density wave in K0.3MoO3. J. Phys. IV France 12: 81, (12):81-82, 2002. [PUMA: charge density wave]

Sanjib Kar, Biprajit Sarkar, Sandeep Ghumaan, Deepa Janardanan, Joris van Slageren, Jan Fiedler, Vedavati G. Puranik, Raghavan B. Sunoj, Wolfgang Kaim, and Goutam Kumar. Lahiri. 2,5-Dioxido-1,4-benzoquinonediimine (H2L2-), a hydrogen-bonding noninnocent bridging ligand related to aminated topaquinone: Different oxidation state distributions in complexes (bpy)2Ru2(m-H2L)n (n = 0 , +, 2+, 3+, 4+) and (acac)2Ru2(m-H2L)m (m = 2-, -, 0, +, 2+). Chemistry - A European Journal, (11)17:4901--4911, 2005. [PUMA: acac bond bridged bridging charge complex complex;crystal complex;electrochem complex;hydrogen complex;mixed complex;ruthenium dinuclear dioxidobenzoquinonediimine electrochem ligand prepn redox ruthenium structure transfer valence]

Animesh Nayak, Srikanta Patra, Biprajit Sarkar, Sandeep Ghumaan, Vedavati G. Puranik, Wolfgang Kaim, and Goutam Kumar. Lahiri. Tetrazine derived mononuclear RuII(acac)2(L) (1), RuII(bpy)2(L)(ClO4)2 (2) and RuII(bpy)(L)2(ClO4)2 (3) (L = 3-amino-6-(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine, acac = acetylacetonate, bpy = 2,2'-bipyridine): Syntheses, structures, spectra and redox properties. Polyhedron, (24)2:333--342, 2005. [PUMA: acetylacetonate aminopyrazolyltetrazine bipyridine charge complex complex;crystal complex;electrochem complex;ruthenium luminescence redox ruthenium spectrum structure transfer]

Amarendra Nath Maity, Brigitte Schwederski, and Wolfgang. Kaim. The redox pair (μ4-TCNE)Fe(CO)2(C5H5)44+/3+: Surprisingly small metal-ligand interaction and the first resolved EPR hyperfine structure (13C, 14N, 57Fe) of a tetranuclear complex with TCNE-. Inorganic Chemistry Communications, (8)7:600--602, 2005. [PUMA: MLCT band bridged charge complex complex;EPR complex;metal complex;redox complex;tetracyanoethylene coordinated coupling cyclopentadienyl cyclopentadienyliron dicarbonyl hyperfine interaction iron ligand nitrogen potential prepn spectrum tetracyanoethylene tetranuclear transfer]

Steffen Hasenzahl, Wolfgang Kaim, and Thomas. Stahl. Charge and electron transfer from metal-to-carbon bonds of Main Group organometallics MRn (M = Al, Ga, Zn) to aromatic N-heterocycles: Colored precursor compounds and radical complex formation. Inorganica Chimica Acta, (225)1-2:23--34, 1994. [PUMA: Group aluminum bond carbon charge gallium metal organometallic organometallic;Main organometallic;heterocycle reaction transfer zinc]

Biprajit Sarkar, Wolfgang Kaim, Jan Fiedler, and Carole. Duboc. Molecule-Bridged Mixed-Valent Intermediates Involving the RuI Oxidation State. Journal of the American Chemical Society, (126)45:14706--14707, 2004. [PUMA: UV arene areneruthenium azobispyridine bridged charge complex complex;redox complex;ruthenium dimer;EPR dimer;cyclic diruthenium iminomethylpyrazine mixed potential prepn spectra transfer transition valence voltammetry]

Mark R. Ringenberg, Max Schwilk, Florian Wittkamp, Ulf-Peter Apfel, and Wolfgang. Kaim. Organometallic Fe-Fe Interactions: Beyond Common Metal-Metal Bonds and Inverse Mixed-Valent Charge Transfer. Chemistry - A European Journal, (23)8:1770--1774, 2017. [PUMA: bond calcn;mol carbonyl charge complex crystal ferrocenyl iron mol optimized prepn;mixed redox spectroelectrochem structure transfer valent]

Fridmann M. Hornung, Frank Baumann, Wolfgang Kaim, Jose A. Olabe, Leonardo D. Slep, and Jan. Fiedler. Spectroelectrochemical Characterization of the Two-Step Redox System (μ-pz)Os(CN)52n- (n = 4, 5, 6; pz = Pyrazine). Similarities and Differences in Relation to the Creutz-Taube System. Inorganic Chemistry, (37)2:311--316, 1998. [PUMA: charge cyano dinuclear dinuclear;electrochem dinuclear;osmium osmium oxidn prepn pyrazine spectra spectroelectrochem transfer]

Fridmann M. Hornung, Karl Wilhelm Klinkhammer, and Wolfgang. Kaim. New sulfide-bridged heterocubanes MVI(S)ReI3(CO)9(m3-S)4-, M = Mo or W, with transition metals in very different oxidation states. Chemical Communications (Cambridge, United Kingdom), 18:2055--2056, 1998. [PUMA: carbonyl charge heterocubane heterocubane;crystal heterocubane;cubane heterocubane;rhenium heterocubane;tungsten molybdenum potential prepn prepn;molybdenum prepn;redn prepn;structure rhenium structure sulfido sulfidorhenium transfer tungsten]

Anita Grupp, Martina Bubrin, Fabian Ehret, Qiang Zeng, Frantisek Hartl, Hana Kvapilova, Stanislav Zalis, and Wolfgang. Kaim. RuII(a-diimine) or RuIII(a-diimine·-)? Structural, Spectroscopic, and Theoretical Evidence for the Stabilization of a Prominent Metal-to-Ligand Charge-Transfer Excited-State Configuration in the Ground State. European Journal of Inorganic Chemistry, (2014)1:110--119, 2014. [PUMA: ESR acetylacetonato alpha charge complex configuration crystal diazabutadiene excited ground ligand metal mol pentanedionate prepn radical ruthenium spectroelectrochem;diimine state structure;stabilization transfer]

Sudipta Mondal, Brigitte Schwederski, Wolfgang Frey, Jan Fiedler, Stanislav Zalis, and Wolfgang. Kaim. At the Borderline between Metal-Metal Mixed Valency and a Radical Bridge Situation: Four Charge States of a Diruthenium Complex with a Redox-Active Bis(mer-tridentate) Ligand. Inorganic Chemistry, (57)7:3983--3992, 2018. [PUMA: DFT active;ruthenium analysis bridge charge complex;mixed crystal diruthenium prepn radical redox ruthenium salicyloylhydrazide spectroelectrochem state structure tertbutylterpyridine valency]

Wolfgang Kaim, Axel Klein, Steffen Hasenzahl, Hermann Stoll, Stanislav Zalis, and Jan. Fiedler. Reactions of New Organoplatinum(II) and -(IV) Complexes of 1,4-Diaza-1,3-butadienes with Light and Electrons. Emission vs Photochemistry and the Electronic Structures of Ground, Reduced, Oxidized, and Low-Lying Charge-Transfer Excited States. Organometallics, (17)2:237--247, 1998. [PUMA: HF MO alkyl aryl charge chelate chelate;DAB chelate;diazabutadiene chelate;oxidized diazabutadiene excited low lying organoplatinum platinum prepn prepn;electronic reaction;DFT structure transfer]

Stephanie Frantz, Jochen Rall, Ingo Hartenbach, Thomas Schleid, Stanislav Zalis, and Wolfgang. Kaim. Metal-induced tautomerization of p- to o-quinone compounds: Experimental evidence from CuI and ReI complexes of azophenine and DFT studies. Chemistry - A European Journal, (10)1:149--154, 2004. [PUMA: DFT azophenine charge complex copper crystal prepn rhenium structure;mol structure;tautomer transfer]

Markus Glockle, Nestor E. Katz, Michael Ketterle, and Wolfgang. Kaim. Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron(II,II) and diiron(III,II) cyanide complexes. Inorganica Chimica Acta, (336):55--60, 2002. [PUMA: absorption charge complex cyano iron mixed solvatochromism transfer valence]

Wolfgang Kaim, Monika Sieger, Stefan Greulich, Biprajit Sarkar, Jan Fiedler, and Stanislav. Zalis. The 1,4-diazabutadiene/1,2-enediamido non-innocent ligand system in the formation of iridaheteroaromatic compounds: Spectroelectrochemistry and electronic structure. Journal of Organometallic Chemistry, (695)7:1052--1058, 2010. [PUMA: Frontier charge complex cyclopentadienyl electrochem electrochem;cyclopentadienyl enediamido iridium mol orbital;electronic oxidn structure transfer transition]

Fridmann M. Hornung, Frank Baumann, Wolfgang Kaim, Jose A. Olabe, Leonardo D. Slep, and Jan. Fiedler. Spectroelectrochemical Characterization of the Two-Step Redox System (μ-pz)Os(CN)52n- (n = 4, 5, 6; pz = Pyrazine). Similarities and Differences in Relation to the Creutz-Taube System. Erratum to document cited in CA128:56656. Inorganic Chemistry, (37)20:5402, 1998. [PUMA: charge cyano dinuclear electrochem erratum erratum;cyano erratum;electrochem erratum;erratum erratum;oxidn erratum;transfer osmium oxidn prepn pyrazine pyrazine;osmium spectra spectroelectrochem transfer]

Wolfgang Kaim, Sylvia Ernst, and Stephan. Kohlmann. Colored complexes: The charge transfer phenomenon. Chemie in Unserer Zeit, (21)2:50--58, 1987. [PUMA: charge colored complex review transfer]

Renate Gross, and Wolfgang. Kaim. Charge-transfer and electron-transfer properties of d6 metal complexes with m-pyrazine. Mononuclear and binuclear manganese(I) compounds. Inorganic Chemistry, (25)4:498--506, 1986. [PUMA: charge complex complex;ESR complex;MO complex;cyclic complex;electron complex;redox manganese pyrazine transfer voltammetry]

Conny Vogler, and Wolfgang. Kaim. Mononuclear bis(triphenylphosphine)copper(I) complexes of bidiazines. Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences, (47)8:1057--1062, 1992. [PUMA: bidiazine bipyrazine bipyridazine bipyrimidine;redn charge complex complex;copper copper potential transfer]

Amarendra Nath Maity, Brigitte Schwederski, and Wolfgang. Kaim. The redox pair (μ4-TCNE)Fe(CO)2(C5H5)44+/3+: Surprisingly small metal-ligand interaction and the first resolved EPR hyperfine structure (13C, 14N, 57Fe) of a tetranuclear complex with TCNE-. Inorganic Chemistry Communications, (8)7:600--602, 2005. [PUMA: MLCT band bridged charge complex complex;EPR complex;metal complex;redox complex;tetracyanoethylene coordinated coupling cyclopentadienyl cyclopentadienyliron dicarbonyl hyperfine interaction iron ligand nitrogen potential prepn spectrum tetracyanoethylene tetranuclear transfer]

Christian Bessenbacher, Conny Vogler, and Wolfgang. Kaim. Stabilization of biochemically interesting intermediates by metal coordination. 6. Charge transfer in complexes of 1,3-dimethyllumazine with low-valent metals. Inorganic Chemistry, (28)26:4645--4648, 1989. [PUMA: charge complex complex;electrochem complex;ruthenium complex;transition lumazine lumazine;copper lumazine;rhenium metal redox transfer transition]

Eberhard Waldhoer, Juergen Poppe, Wolfgang Kaim, Edgardo H. Cutin, Monica E. Garcia Posse, and Nestor E. Katz. EPR Evidence for Low-Lying MLCT States in Tetracyanoiron and -ruthenium Complexes with Strongly p-Accepting Chelate Ligands. Comparison with Isoelectronic Tetracarbonylmetal Species. Inorganic Chemistry, (34)11:3093--3096, 1995. [PUMA: azobispyridine azobispyridine;ESR azobispyridine;electrochem bipyrazine charge complex;MLCT cyano cyano;iron iron redox ruthenium transfer]

Anita Grupp, Martina Bubrin, Fabian Ehret, Hana Kvapilova, Stanislav Zalis, and Wolfgang. Kaim. Oxidation and reduction response of a-diimine complexes with tricarbonylrhenium halides and pseudohalides. Journal of Organometallic Chemistry, (751):678--685, 2014. [PUMA: DFT carbonyl charge complex crystal diazabutadiene diimine halide oxidn prepn pseudohalide redn rhenium spectroelectrochem structure transfer;rhenium]

Moumita Koley, Biprajit Sarkar, Sandeep Ghumaan, Ece Bulak, Jan Fiedler, Wolfgang Kaim, and Goutam Kumar. Lahiri. Probing Mixed Valence in a New tppz-Bridged Diruthenium(III,II) Complex (μ-tppz)Ru(bik)Cl23+ (tppz = 2,3,5,6-Tetrakis(2-pyridyl)pyrazine, bik = 2,2'-Bis(1-methylimidazolyl)ketone): EPR Silence, Intervalence Absorption, and nCO Line Broadening. Inorganic Chemistry, (46)9:3736--3742, 2007. [PUMA: ESR IR UV charge electrochem methylimidazolylketone methylimidazolylketone;intervalence methylimidazolylketone;ruthenium mixed oxidn prepn pyridylpyrazine redn ruthenium transfer transition valent]

Stanislav Zalis, Monika Sieger, Stefan Greulich, Hermann Stoll, and Wolfgang. Kaim. Replacement of 2,2'-Bipyridine by 1,4-Diazabutadiene Acceptor Ligands: Why the Bathochromic Shift for (NN̂)IrCl(C5Me5)+ Complexes but the Hypsochromic Shift for (NN̂)Ir(C5Me5)?. Inorganic Chemistry, (42)17:5185--5191, 2003. [PUMA: DFT HOMO LUMO bathochromic bipyridine cationic charge chloro complex complex;DFT cyclopentadienyl diazabutadiene hypsochromic interaction iridium shift;orbital transfer]

Wolfgang Kaim, Holger Tesmann, and Hans. Bock. Substituent effects and perturbation of p-systems. XXXVI. tert-Butyl-, trimethylsilyl-, trimethylgermyl-, trimethylstannyl- and trimethylplumbyl-substituted benzene and naphthalene derivatives and their anion radicals. Chemische Berichte, (113)10:3221--3234, 1980. [PUMA: anion benzene charge deriv deriv;ESR deriv;energy deriv;radical deriv;redn germylbenzene naphthalene potential radical redox spectra stannylbenzene;photoelectron transfer]

Matthias Wanner, Ingo Hartenbach, Jan Fiedler, Thomas Schleid, and Wolfgang. Kaim. Dinuclear and trinuclear organometallic complexes (ReS4)MCl(C5Me5), M = Rh, Ir, and (m-WS4)IrCl(C5Me5)2. Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences, (56)9:940--946, 2001. [PUMA: charge crystal cyclopentadienyl dinuclear interaction iridium mol potential prepn redn rhodium structure structure;tetrathiotungstate tetrathiorhenate;electrochem tetrathiorhenate;tetrathiorhenate tetrathiotungstate transfer]

Frank Baumann, Wolfgang Kaim, Jose A. Olabe, Alejandro R. Parise, and Jeanne. Jordanov. Tetranuclear osmium complexes of tetracyanoquinodimethane TCNQ, 2,2'-(cyclohexa-2,5-diene-1,4-diylidene)bis(propane-1,3-dinitrile) and 1,2,4,5-tetracyanobenzene (TCNB). Synthesis, spectroelectrochemistry and magnetism. Journal of the Chemical Society, Dalton Transactions: Inorganic Chemistry, 22:4455--4460, 1997. [PUMA: TCNB TCNQ charge complex complex;osmium intervalence magnetism magnetism;TCNQ osmium prepn spectroelectrochem spectroelectrochem;TCNB tetranuclear tetranuclear;magnetism transfer]

Wolfgang Kaim, and Stephan. Kohlmann. The nature of reduced and excited states of p-electron-deficient complexes between tricarbonylhalorhenium and diimine ligands. Inorganic Chemistry, (29)16:2909--2914, 1990. [PUMA: carbonyl charge configuration diimine dinuclear dinuclear;electrochem dinuclear;electron dinuclear;energy dinuclear;rhenium halo level redn rhenium transfer transition]

Stephan Kohlmann, Sylvia Ernst, and Wolfgang. Kaim. Extremely long-wavelength charge-transfer absorption of binuclear complexes with azo-modified 2,2'-bipyridyl ligands. Angewandte Chemie, (97)8:698--699, 1985. [PUMA: azodipyridine charge dipyridyltetrazine dipyridyltetrazine;molybdenum dipyridyltetrazine;ruthenium dipyridyltetrazine;transition dipyridyltetrazine;tungsten metal transfer;dipyridyltetrazine transfer;manganese transition]

Sanjib Kar, Biprajit Sarkar, Sandeep Ghumaan, Deepa Janardanan, Joris van Slageren, Jan Fiedler, Vedavati G. Puranik, Raghavan B. Sunoj, Wolfgang Kaim, and Goutam Kumar. Lahiri. 2,5-Dioxido-1,4-benzoquinonediimine (H2L2-), a hydrogen-bonding noninnocent bridging ligand related to aminated topaquinone: Different oxidation state distributions in complexes (bpy)2Ru2(m-H2L)n (n = 0 , +, 2+, 3+, 4+) and (acac)2Ru2(m-H2L)m (m = 2-, -, 0, +, 2+). Chemistry - A European Journal, (11)17:4901--4911, 2005. [PUMA: acac bond bridged bridging charge complex complex;crystal complex;electrochem complex;hydrogen complex;mixed complex;ruthenium dinuclear dioxidobenzoquinonediimine electrochem ligand prepn redox ruthenium structure transfer valence]

W. Kaim. Complexes with 2,2'-azobis(pyridine) and related 'S-frame' bridging ligands containing the azo function. Coordination Chemistry Reviews, (219-221):463--488, 2001. [PUMA: azobispyridine charge complex complex;structure intermediate metal review review;isomerism review;mixed review;oxidn review;radical review;review state transfer valence]

W. Kaim, F. M. Hornung, R. Schafer, J. Fiedler, M. Krejcik, and S. Zalis. Charge transfer phenomena in transition metal sulfur chemistry. NATO ASI Series, Series 3: High Technology, (60)Transition Metal Sulphides:37--55, 1998. [PUMA: charge complex metal review sulfide transfer transition]

Wolfgang Kaim, and Hans. Bock. Photoelectron spectra and molecular properties. 77. Radical ions, XXIII. R2P and R2N substituted benzenes: Charge distribution in their cations, anions, and trianions. Chemische Berichte, (111)12:3843--3856, 1978. [PUMA: ESR aminobenzene;redn anion;ionization bisphosphinobenzene;spin charge coupling distribution phosphinoaminobenzene phosphinoaminobenzene;ESR phosphinoaminobenzene;photoelectron phosphinobenzene potential radical spectra]

Renate Gross, and Wolfgang. Kaim. Deprotonated p-phenylenediamines as noninnocent ligands. Metal-to-ligand spin transfer in the ground state and ligand-to-metal charge transfer in the lowest excited state of low-spin manganese(II) complexes. Inorganic Chemistry, (26)21:3596--3600, 1987. [PUMA: MO amide charge complex complex;ESR complex;electron complex;manganese configuration cyclopentadienylmanganese;deprotonation manganese phenylenediamine transfer]

Steffen Hasenzahl, Hans-Dieter Hausen, and Wolfgang. Kaim. A tale of two complexes, PtMen(RN=CHCH=NR) (n = 2 and n = 4, R = cyclohexyl): Why do PtII and PtIV complexes exhibit virtually identical redox behavior and colors?. Chemistry - A European Journal, (1)1:95--99, 1995. [PUMA: charge complex complex;EPR complex;MO complex;crystal complex;electrochem complex;mol complex;platinum diazabutadiene methyl platinum prepn property structure transfer]

Derk J. Stufkens, Theo L. Snoeck, Wolfgang Kaim, Thomas Roth, and Barbara. Olbrich-Deussner. Resonance Raman study of (h2-TCNE)M(CO)5 (M = Cr, W; TCNE = tetracyanoethene). Evidence for an olefin-complex $\rightarrow$ metallacyclopropane transition upon low-energy metal-to-ligand charge-transfer excitation. Journal of Organometallic Chemistry, (409)1-2:189--195, 1991. [PUMA: Raman Raman;charge Raman;chromium Raman;hybridization Raman;tungsten carbonyl carbonyltetracyanoethane charge chromium complex metal tetracyanoethane transfer transfer;cyanoethane tungsten]

Wolfgang Kaim, Stephan Kohlmann, Sylvia Ernst, Barbara Olbrich-Deussner, Christian Bessenbacher, and Andreas. Schulz. What determines the solvatochromism of metal-to-ligand charge transfer transitions? A demonstration involving 17 tungsten carbonyl complexes. Journal of Organometallic Chemistry, (321)2:215--226, 1987. [PUMA: charge ligand metal solvatochromism transfer]

Animesh Nayak, Srikanta Patra, Biprajit Sarkar, Sandeep Ghumaan, Vedavati G. Puranik, Wolfgang Kaim, and Goutam Kumar. Lahiri. Tetrazine derived mononuclear RuII(acac)2(L) (1), RuII(bpy)2(L)(ClO4)2 (2) and RuII(bpy)(L)2(ClO4)2 (3) (L = 3-amino-6-(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine, acac = acetylacetonate, bpy = 2,2'-bipyridine): Syntheses, structures, spectra and redox properties. Polyhedron, (24)2:333--342, 2005. [PUMA: acetylacetonate aminopyrazolyltetrazine bipyridine charge complex complex;crystal complex;electrochem complex;ruthenium luminescence redox ruthenium spectrum structure transfer]

Farzaneh Vahidi, Mark Jovalekic, Stefan Tenbohlen, M. Rösner, C. Perrier, and H. Fink. Space Charge Formation in Insulating Liquids under DC Stresses. 2014. [PUMA: Charge DC Formation Insulating Liquids Space Stresses]

Martin Siegel, and Stefan Tenbohlen. Comparison between Electrical and UHF PD Measurement concerning Calibration and Sensitivity for Power Transformers. 2014. [PUMA: (PD) Apparent Calibration Charge Discharge Partial Power Sensitivity Transformer UHF] URL

Adolphe Moukengué Imano. Accumulation of surface charges on the particle contaminated spacer surface in compressed gas under impulse voltage stress. Journal of Electrostatics, 1-19, 2004. [PUMA: Charge Gas Partial Space Spacer Streamer Sulphurhexafluoride Surface accumulation discharges insulating systems]

Animesh Nayak, Srikanta Patra, Biprajit Sarkar, Sandeep Ghumaan, Vedavati G. Puranik, Wolfgang Kaim, and Goutam Kumar. Lahiri. Tetrazine derived mononuclear RuII(acac)2(L) (1), RuII(bpy)2(L)(ClO4)2 (2) and RuII(bpy)(L)2(ClO4)2 (3) (L = 3-amino-6-(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine, acac = acetylacetonate, bpy = 2,2'-bipyridine): Syntheses, structures, spectra and redox properties. Polyhedron, (24)2:333--342, 2005. [PUMA: acetylacetonate aminopyrazolyltetrazine bipyridine charge complex complex;crystal complex;electrochem complex;ruthenium luminescence redox ruthenium spectrum structure transfer]

Wolfgang Kaim, Stephan Kohlmann, Sylvia Ernst, Barbara Olbrich-Deussner, Christian Bessenbacher, and Andreas. Schulz. What determines the solvatochromism of metal-to-ligand charge transfer transitions? A demonstration involving 17 tungsten carbonyl complexes. Journal of Organometallic Chemistry, (321)2:215--226, 1987. [PUMA: charge ligand metal solvatochromism transfer]

Derk J. Stufkens, Theo L. Snoeck, Wolfgang Kaim, Thomas Roth, and Barbara. Olbrich-Deussner. Resonance Raman study of (h2-TCNE)M(CO)5 (M = Cr, W; TCNE = tetracyanoethene). Evidence for an olefin-complex $\rightarrow$ metallacyclopropane transition upon low-energy metal-to-ligand charge-transfer excitation. Journal of Organometallic Chemistry, (409)1-2:189--195, 1991. [PUMA: Raman Raman;charge Raman;chromium Raman;hybridization Raman;tungsten carbonyl carbonyltetracyanoethane charge chromium complex metal tetracyanoethane transfer transfer;cyanoethane tungsten]

Steffen Hasenzahl, Hans-Dieter Hausen, and Wolfgang. Kaim. A tale of two complexes, PtMen(RN=CHCH=NR) (n = 2 and n = 4, R = cyclohexyl): Why do PtII and PtIV complexes exhibit virtually identical redox behavior and colors?. Chemistry - A European Journal, (1)1:95--99, 1995. [PUMA: charge complex complex;EPR complex;MO complex;crystal complex;electrochem complex;mol complex;platinum diazabutadiene methyl platinum prepn property structure transfer]

Renate Gross, and Wolfgang. Kaim. Deprotonated p-phenylenediamines as noninnocent ligands. Metal-to-ligand spin transfer in the ground state and ligand-to-metal charge transfer in the lowest excited state of low-spin manganese(II) complexes. Inorganic Chemistry, (26)21:3596--3600, 1987. [PUMA: MO amide charge complex complex;ESR complex;electron complex;manganese configuration cyclopentadienylmanganese;deprotonation manganese phenylenediamine transfer]

Wolfgang Kaim, and Hans. Bock. Photoelectron spectra and molecular properties. 77. Radical ions, XXIII. R2P and R2N substituted benzenes: Charge distribution in their cations, anions, and trianions. Chemische Berichte, (111)12:3843--3856, 1978. [PUMA: ESR aminobenzene;redn anion;ionization bisphosphinobenzene;spin charge coupling distribution phosphinoaminobenzene phosphinoaminobenzene;ESR phosphinoaminobenzene;photoelectron phosphinobenzene potential radical spectra]

W. Kaim, F. M. Hornung, R. Schafer, J. Fiedler, M. Krejcik, and S. Zalis. Charge transfer phenomena in transition metal sulfur chemistry. NATO ASI Series, Series 3: High Technology, (60)Transition Metal Sulphides:37--55, 1998. [PUMA: charge complex metal review sulfide transfer transition]

W. Kaim. Complexes with 2,2'-azobis(pyridine) and related 'S-frame' bridging ligands containing the azo function. Coordination Chemistry Reviews, (219-221):463--488, 2001. [PUMA: azobispyridine charge complex complex;structure intermediate metal review review;isomerism review;mixed review;oxidn review;radical review;review state transfer valence]

Sanjib Kar, Biprajit Sarkar, Sandeep Ghumaan, Deepa Janardanan, Joris van Slageren, Jan Fiedler, Vedavati G. Puranik, Raghavan B. Sunoj, Wolfgang Kaim, and Goutam Kumar. Lahiri. 2,5-Dioxido-1,4-benzoquinonediimine (H2L2-), a hydrogen-bonding noninnocent bridging ligand related to aminated topaquinone: Different oxidation state distributions in complexes (bpy)2Ru2(m-H2L)n (n = 0 , +, 2+, 3+, 4+) and (acac)2Ru2(m-H2L)m (m = 2-, -, 0, +, 2+). Chemistry - A European Journal, (11)17:4901--4911, 2005. [PUMA: acac bond bridged bridging charge complex complex;crystal complex;electrochem complex;hydrogen complex;mixed complex;ruthenium dinuclear dioxidobenzoquinonediimine electrochem ligand prepn redox ruthenium structure transfer valence]

Stephan Kohlmann, Sylvia Ernst, and Wolfgang. Kaim. Extremely long-wavelength charge-transfer absorption of binuclear complexes with azo-modified 2,2'-bipyridyl ligands. Angewandte Chemie, (97)8:698--699, 1985. [PUMA: azodipyridine charge dipyridyltetrazine dipyridyltetrazine;molybdenum dipyridyltetrazine;ruthenium dipyridyltetrazine;transition dipyridyltetrazine;tungsten metal transfer;dipyridyltetrazine transfer;manganese transition]

Wolfgang Kaim, and Stephan. Kohlmann. The nature of reduced and excited states of p-electron-deficient complexes between tricarbonylhalorhenium and diimine ligands. Inorganic Chemistry, (29)16:2909--2914, 1990. [PUMA: carbonyl charge configuration diimine dinuclear dinuclear;electrochem dinuclear;electron dinuclear;energy dinuclear;rhenium halo level redn rhenium transfer transition]

Frank Baumann, Wolfgang Kaim, Jose A. Olabe, Alejandro R. Parise, and Jeanne. Jordanov. Tetranuclear osmium complexes of tetracyanoquinodimethane TCNQ, 2,2'-(cyclohexa-2,5-diene-1,4-diylidene)bis(propane-1,3-dinitrile) and 1,2,4,5-tetracyanobenzene (TCNB). Synthesis, spectroelectrochemistry and magnetism. Journal of the Chemical Society, Dalton Transactions: Inorganic Chemistry, 22:4455--4460, 1997. [PUMA: TCNB TCNQ charge complex complex;osmium intervalence magnetism magnetism;TCNQ osmium prepn spectroelectrochem spectroelectrochem;TCNB tetranuclear tetranuclear;magnetism transfer]

Matthias Wanner, Ingo Hartenbach, Jan Fiedler, Thomas Schleid, and Wolfgang. Kaim. Dinuclear and trinuclear organometallic complexes (ReS4)MCl(C5Me5), M = Rh, Ir, and (m-WS4)IrCl(C5Me5)2. Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences, (56)9:940--946, 2001. [PUMA: charge crystal cyclopentadienyl dinuclear interaction iridium mol potential prepn redn rhodium structure structure;tetrathiotungstate tetrathiorhenate;electrochem tetrathiorhenate;tetrathiorhenate tetrathiotungstate transfer]

Wolfgang Kaim, Holger Tesmann, and Hans. Bock. Substituent effects and perturbation of p-systems. XXXVI. tert-Butyl-, trimethylsilyl-, trimethylgermyl-, trimethylstannyl- and trimethylplumbyl-substituted benzene and naphthalene derivatives and their anion radicals. Chemische Berichte, (113)10:3221--3234, 1980. [PUMA: anion benzene charge deriv deriv;ESR deriv;energy deriv;radical deriv;redn germylbenzene naphthalene potential radical redox spectra stannylbenzene;photoelectron transfer]

Stanislav Zalis, Monika Sieger, Stefan Greulich, Hermann Stoll, and Wolfgang. Kaim. Replacement of 2,2'-Bipyridine by 1,4-Diazabutadiene Acceptor Ligands: Why the Bathochromic Shift for (NN̂)IrCl(C5Me5)+ Complexes but the Hypsochromic Shift for (NN̂)Ir(C5Me5)?. Inorganic Chemistry, (42)17:5185--5191, 2003. [PUMA: DFT HOMO LUMO bathochromic bipyridine cationic charge chloro complex complex;DFT cyclopentadienyl diazabutadiene hypsochromic interaction iridium shift;orbital transfer]

Moumita Koley, Biprajit Sarkar, Sandeep Ghumaan, Ece Bulak, Jan Fiedler, Wolfgang Kaim, and Goutam Kumar. Lahiri. Probing Mixed Valence in a New tppz-Bridged Diruthenium(III,II) Complex (μ-tppz)Ru(bik)Cl23+ (tppz = 2,3,5,6-Tetrakis(2-pyridyl)pyrazine, bik = 2,2'-Bis(1-methylimidazolyl)ketone): EPR Silence, Intervalence Absorption, and nCO Line Broadening. Inorganic Chemistry, (46)9:3736--3742, 2007. [PUMA: ESR IR UV charge electrochem methylimidazolylketone methylimidazolylketone;intervalence methylimidazolylketone;ruthenium mixed oxidn prepn pyridylpyrazine redn ruthenium transfer transition valent]

Anita Grupp, Martina Bubrin, Fabian Ehret, Hana Kvapilova, Stanislav Zalis, and Wolfgang. Kaim. Oxidation and reduction response of a-diimine complexes with tricarbonylrhenium halides and pseudohalides. Journal of Organometallic Chemistry, (751):678--685, 2014. [PUMA: DFT carbonyl charge complex crystal diazabutadiene diimine halide oxidn prepn pseudohalide redn rhenium spectroelectrochem structure transfer;rhenium]

Eberhard Waldhoer, Juergen Poppe, Wolfgang Kaim, Edgardo H. Cutin, Monica E. Garcia Posse, and Nestor E. Katz. EPR Evidence for Low-Lying MLCT States in Tetracyanoiron and -ruthenium Complexes with Strongly p-Accepting Chelate Ligands. Comparison with Isoelectronic Tetracarbonylmetal Species. Inorganic Chemistry, (34)11:3093--3096, 1995. [PUMA: azobispyridine azobispyridine;ESR azobispyridine;electrochem bipyrazine charge complex;MLCT cyano cyano;iron iron redox ruthenium transfer]

Christian Bessenbacher, Conny Vogler, and Wolfgang. Kaim. Stabilization of biochemically interesting intermediates by metal coordination. 6. Charge transfer in complexes of 1,3-dimethyllumazine with low-valent metals. Inorganic Chemistry, (28)26:4645--4648, 1989. [PUMA: charge complex complex;electrochem complex;ruthenium complex;transition lumazine lumazine;copper lumazine;rhenium metal redox transfer transition]

Amarendra Nath Maity, Brigitte Schwederski, and Wolfgang. Kaim. The redox pair (μ4-TCNE)Fe(CO)2(C5H5)44+/3+: Surprisingly small metal-ligand interaction and the first resolved EPR hyperfine structure (13C, 14N, 57Fe) of a tetranuclear complex with TCNE-. Inorganic Chemistry Communications, (8)7:600--602, 2005. [PUMA: MLCT band bridged charge complex complex;EPR complex;metal complex;redox complex;tetracyanoethylene coordinated coupling cyclopentadienyl cyclopentadienyliron dicarbonyl hyperfine interaction iron ligand nitrogen potential prepn spectrum tetracyanoethylene tetranuclear transfer]

Conny Vogler, and Wolfgang. Kaim. Mononuclear bis(triphenylphosphine)copper(I) complexes of bidiazines. Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences, (47)8:1057--1062, 1992. [PUMA: bidiazine bipyrazine bipyridazine bipyrimidine;redn charge complex complex;copper copper potential transfer]

Renate Gross, and Wolfgang. Kaim. Charge-transfer and electron-transfer properties of d6 metal complexes with m-pyrazine. Mononuclear and binuclear manganese(I) compounds. Inorganic Chemistry, (25)4:498--506, 1986. [PUMA: charge complex complex;ESR complex;MO complex;cyclic complex;electron complex;redox manganese pyrazine transfer voltammetry]

Wolfgang Kaim, Sylvia Ernst, and Stephan. Kohlmann. Colored complexes: The charge transfer phenomenon. Chemie in Unserer Zeit, (21)2:50--58, 1987. [PUMA: charge colored complex review transfer]

Fridmann M. Hornung, Frank Baumann, Wolfgang Kaim, Jose A. Olabe, Leonardo D. Slep, and Jan. Fiedler. Spectroelectrochemical Characterization of the Two-Step Redox System (μ-pz)Os(CN)52n- (n = 4, 5, 6; pz = Pyrazine). Similarities and Differences in Relation to the Creutz-Taube System. Erratum to document cited in CA128:56656. Inorganic Chemistry, (37)20:5402, 1998. [PUMA: charge cyano dinuclear electrochem erratum erratum;cyano erratum;electrochem erratum;erratum erratum;oxidn erratum;transfer osmium oxidn prepn pyrazine pyrazine;osmium spectra spectroelectrochem transfer]

Wolfgang Kaim, Monika Sieger, Stefan Greulich, Biprajit Sarkar, Jan Fiedler, and Stanislav. Zalis. The 1,4-diazabutadiene/1,2-enediamido non-innocent ligand system in the formation of iridaheteroaromatic compounds: Spectroelectrochemistry and electronic structure. Journal of Organometallic Chemistry, (695)7:1052--1058, 2010. [PUMA: Frontier charge complex cyclopentadienyl electrochem electrochem;cyclopentadienyl enediamido iridium mol orbital;electronic oxidn structure transfer transition]

Markus Glockle, Nestor E. Katz, Michael Ketterle, and Wolfgang. Kaim. Qualitatively and quantitatively different solvatochromism of the MLCT and MMCT absorption bands of centrosymmetric acceptor-bridged diiron(II,II) and diiron(III,II) cyanide complexes. Inorganica Chimica Acta, (336):55--60, 2002. [PUMA: absorption charge complex cyano iron mixed solvatochromism transfer valence]

Stephanie Frantz, Jochen Rall, Ingo Hartenbach, Thomas Schleid, Stanislav Zalis, and Wolfgang. Kaim. Metal-induced tautomerization of p- to o-quinone compounds: Experimental evidence from CuI and ReI complexes of azophenine and DFT studies. Chemistry - A European Journal, (10)1:149--154, 2004. [PUMA: DFT azophenine charge complex copper crystal prepn rhenium structure;mol structure;tautomer transfer]

Wolfgang Kaim, Axel Klein, Steffen Hasenzahl, Hermann Stoll, Stanislav Zalis, and Jan. Fiedler. Reactions of New Organoplatinum(II) and -(IV) Complexes of 1,4-Diaza-1,3-butadienes with Light and Electrons. Emission vs Photochemistry and the Electronic Structures of Ground, Reduced, Oxidized, and Low-Lying Charge-Transfer Excited States. Organometallics, (17)2:237--247, 1998. [PUMA: HF MO alkyl aryl charge chelate chelate;DAB chelate;diazabutadiene chelate;oxidized diazabutadiene excited low lying organoplatinum platinum prepn prepn;electronic reaction;DFT structure transfer]

Sudipta Mondal, Brigitte Schwederski, Wolfgang Frey, Jan Fiedler, Stanislav Zalis, and Wolfgang. Kaim. At the Borderline between Metal-Metal Mixed Valency and a Radical Bridge Situation: Four Charge States of a Diruthenium Complex with a Redox-Active Bis(mer-tridentate) Ligand. Inorganic Chemistry, (57)7:3983--3992, 2018. [PUMA: DFT active;ruthenium analysis bridge charge complex;mixed crystal diruthenium prepn radical redox ruthenium salicyloylhydrazide spectroelectrochem state structure tertbutylterpyridine valency]

Anita Grupp, Martina Bubrin, Fabian Ehret, Qiang Zeng, Frantisek Hartl, Hana Kvapilova, Stanislav Zalis, and Wolfgang. Kaim. RuII(a-diimine) or RuIII(a-diimine·-)? Structural, Spectroscopic, and Theoretical Evidence for the Stabilization of a Prominent Metal-to-Ligand Charge-Transfer Excited-State Configuration in the Ground State. European Journal of Inorganic Chemistry, (2014)1:110--119, 2014. [PUMA: ESR acetylacetonato alpha charge complex configuration crystal diazabutadiene excited ground ligand metal mol pentanedionate prepn radical ruthenium spectroelectrochem;diimine state structure;stabilization transfer]

Fridmann M. Hornung, Karl Wilhelm Klinkhammer, and Wolfgang. Kaim. New sulfide-bridged heterocubanes MVI(S)ReI3(CO)9(m3-S)4-, M = Mo or W, with transition metals in very different oxidation states. Chemical Communications (Cambridge, United Kingdom), 18:2055--2056, 1998. [PUMA: carbonyl charge heterocubane heterocubane;crystal heterocubane;cubane heterocubane;rhenium heterocubane;tungsten molybdenum potential prepn prepn;molybdenum prepn;redn prepn;structure rhenium structure sulfido sulfidorhenium transfer tungsten]

Fridmann M. Hornung, Frank Baumann, Wolfgang Kaim, Jose A. Olabe, Leonardo D. Slep, and Jan. Fiedler. Spectroelectrochemical Characterization of the Two-Step Redox System (μ-pz)Os(CN)52n- (n = 4, 5, 6; pz = Pyrazine). Similarities and Differences in Relation to the Creutz-Taube System. Inorganic Chemistry, (37)2:311--316, 1998. [PUMA: charge cyano dinuclear dinuclear;electrochem dinuclear;osmium osmium oxidn prepn pyrazine spectra spectroelectrochem transfer]

Mark R. Ringenberg, Max Schwilk, Florian Wittkamp, Ulf-Peter Apfel, and Wolfgang. Kaim. Organometallic Fe-Fe Interactions: Beyond Common Metal-Metal Bonds and Inverse Mixed-Valent Charge Transfer. Chemistry - A European Journal, (23)8:1770--1774, 2017. [PUMA: bond calcn;mol carbonyl charge complex crystal ferrocenyl iron mol optimized prepn;mixed redox spectroelectrochem structure transfer valent]

Biprajit Sarkar, Wolfgang Kaim, Jan Fiedler, and Carole. Duboc. Molecule-Bridged Mixed-Valent Intermediates Involving the RuI Oxidation State. Journal of the American Chemical Society, (126)45:14706--14707, 2004. [PUMA: UV arene areneruthenium azobispyridine bridged charge complex complex;redox complex;ruthenium dimer;EPR dimer;cyclic diruthenium iminomethylpyrazine mixed potential prepn spectra transfer transition valence voltammetry]

Steffen Hasenzahl, Wolfgang Kaim, and Thomas. Stahl. Charge and electron transfer from metal-to-carbon bonds of Main Group organometallics MRn (M = Al, Ga, Zn) to aromatic N-heterocycles: Colored precursor compounds and radical complex formation. Inorganica Chimica Acta, (225)1-2:23--34, 1994. [PUMA: Group aluminum bond carbon charge gallium metal organometallic organometallic;Main organometallic;heterocycle reaction transfer zinc]